AO RTOS is small real time OS based on Active Object concurrency model
NES/Famicom emulator based on FCE Ultra.
amforth is an extendible interpreter on microcontrollers
A tapas/topaz/sapphire kernel optimized for smoothness and low-memory
A set of tools related to assembly language programming.
Z80 shared library including some nice test-projects
Universal server
Modiifed BIOS for MK88 PC
An open-source Phantasy Star Online server for *nix
VPN client for Small HTTP server
an object-oriented language with late binding
Plays iMelody (IMY) files using many sound systems